CN107557149A - A kind of siritch raw oil refining technique - Google Patents
A kind of siritch raw oil refining technique Download PDFInfo
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- CN107557149A CN107557149A CN201610498082.6A CN201610498082A CN107557149A CN 107557149 A CN107557149 A CN 107557149A CN 201610498082 A CN201610498082 A CN 201610498082A CN 107557149 A CN107557149 A CN 107557149A
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- oil
- siritch
- crude oil
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- deodorization
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007670 refining Methods 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 64
- 239000010779 crude oil Substances 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 22
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000008030 elimination Effects 0.000 claims abstract description 6
- 238000003379 elimination reaction Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 150000003904 phospholipids Chemical class 0.000 claims abstract description 6
- 230000001954 sterilising effect Effects 0.000 claims abstract description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 6
- 235000019198 oils Nutrition 0.000 claims description 61
- 238000004332 deodorization Methods 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000001877 deodorizing effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- ZIIUUSVHCHPIQD-UHFFFAOYSA-N 2,4,6-trimethyl-N-[3-(trifluoromethyl)phenyl]benzenesulfonamide Chemical compound CC1=CC(C)=CC(C)=C1S(=O)(=O)NC1=CC=CC(C(F)(F)F)=C1 ZIIUUSVHCHPIQD-UHFFFAOYSA-N 0.000 claims description 5
- 102000015439 Phospholipases Human genes 0.000 claims description 5
- 108010064785 Phospholipases Proteins 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 239000008159 sesame oil Substances 0.000 claims 1
- 235000011803 sesame oil Nutrition 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 4
- 239000000047 product Substances 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 235000021388 linseed oil Nutrition 0.000 description 5
- 239000000944 linseed oil Substances 0.000 description 5
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 4
- 229960004488 linolenic acid Drugs 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 3
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 238000009874 alkali refining Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 239000010773 plant oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Fats And Perfumes (AREA)
Abstract
The invention discloses a kind of siritch raw oil refining technique, comprise the following steps：(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；(2), degumming；Siritch crude oil after impurity elimination is added in reactor, siritch crude oil is heated with stirring to 50 DEG C 70 DEG C, when siritch crude oil contains non-hydratable phospholipid, adds phosphoric acid amount as the 13 ‰ of oil mass, stir 20 40 minutes, and add mass concentration simultaneously and be 40 50% citric acid solution, and stirred 10 30 minutes with 1,000 1500 revs/min of speed, it is well mixed, then carry out degumming reaction, when the cohesion of colloid particle is in being clearly separated, stirs 20 30 minutes, precipitate 57 hours.Such a acid stripping method deacidification effect of the present invention is good, is laid a good foundation for subsequent process steps, in addition, also it is deodorized in the present invention using steam, deodorising effect, so as to improve byproduct income, production cost is reduced, improves product quality, so as to improve refining oil yield.
Description
Technical field
Present invention relates particularly to a kind of siritch raw oil refining technique, belong to food technology field.
Background technology
In traditional vegetable oil production technique, the steaming of oil plant is fried the parameter unimportant as one such as temperature, pressing temperature and is controlled by, also without measurement and control system accordingly in production equipment, in process of production, temperature is smaller for the relatively low grease production influence of the linolenic acid contents such as rapeseed oil, soybean oil and peanut oil, but linseed oil is had a great influence.Alpha-linolenic acid is the unrighted acid easily aoxidized because heated in linseed oil, therefore, the linseed oil produced using traditional plant oil production technology, because the parameters such as each workshop section's temperature, alkali refining concentration do not obtain science and efficiently control, so that linolenic acid content reduces in linseed oil, product quality is have impact on, its alpha-linolenic acid content is only 40% or so.Using modern industry automated control technology, each link of production rationally, is accurately controlled, the a- leukotrienes as much as possible retained in raw material is not damaged, and is the task of top priority that linseed oil manufacturing enterprise carries out technology and control.
The content of the invention
The technical problem to be solved in the present invention overcomes the defects of existing, a kind of siritch raw oil refining technique is provided, such a acid stripping method deacidification effect is good, laid a good foundation for subsequent process steps, in addition, also it is deodorized, deodorising effect, effectively can be solved the problems, such as in background technology using steam in the present invention.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：The present invention provides a kind of siritch raw oil refining technique, comprises the following steps：(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；(2), degumming；Siritch crude oil after impurity elimination is added in reactor, siritch crude oil is heated with stirring to 50 DEG C -70 DEG C, when siritch crude oil contains non-hydratable phospholipid, add the 1-3 ‰ that phosphoric acid amount is oil mass, stir 20-40 minutes, and the citric acid solution that mass concentration is 40-50% is added simultaneously, and 10-30 minutes are stirred with 1000-1500 revs/min of speed, it is well mixed, degumming reaction is then carried out, when the cohesion of colloid particle is in being clearly separated, stirs 20-30 minutes, 5-7 hours are precipitated, are removed completely to colloid；(3), depickling：Siritch crude oil after degumming is mixed 85% phosphoric acid according to the 0.12-0.15% of oily siritch crude oil gross weight by mixing arrangement, enter retort after mixing, it is 40-80 DEG C to keep environment temperature, and alkali lye is added dropwise in degummed oil, stirs 10-15min, then filter, the hot water that temperature is 80-100 DEG C is added into the liquid filtered out, the addition of water is the 5-10% of the liquid filtered out, stands 5h, refilter, depickling oil is made；(4), decolourize；By the depickling oil in step (3) under conditions of stirring, decolorising agent is added into depickling oil, is then poured into decolouring cucurbit, produces bleached oil；(5), it is deodorized：Bleached oil obtained by step (4) is fitted into deodorizing tank, and placed in deodorizing tank in heating magnetic stirring apparatus, then add immobilized phospholipase and 3-8 hours are stirred with 50-120 revs/min of speed, again with 8000-10000 revs/min of centrifugation 3-5 minutes, deodorization time is 25-30min, steam deodorization is carried out under vacuum, and deodorization pressure is 60-200Pa, and deodorization temperature is 230-240 DEG C；(6), the oil after deodorization is cooled down, untill qualified.
Preferably, the aqueous slkali in step (3) is the NaOH solution that mass concentration is 2-4%, and the pH value for making depickling oil is 6.0-7.5.
Preferably, the degumming temperature in step (2) is 50-60 DEG C, usually time 1.5-2h.
Preferably, the addition of the decolorising agent in step (4) is the heavy 2-4% of oil.
Preferably, the decolouring pressure in step (4) is 0.09-0.1MPa, and the 20-30min that decolourizes.
The beneficial effect that is reached of the present invention is：Such a acid stripping method deacidification effect is good, is laid a good foundation for subsequent process steps, in addition, also it is deodorized in the present invention using steam, deodorising effect, so as to improve byproduct income, production cost is reduced, improves product quality, so as to improve refining oil yield.
Embodiment
It is the explanation carried out to the preferred embodiment of the present invention below, it will be appreciated that preferred embodiment described herein is merely to illustrate and explain the present invention, and is not intended to limit the present invention.
Embodiment 1：
A kind of siritch raw oil refining technique of the present invention, comprises the following steps：(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；(2), degumming；Siritch crude oil after impurity elimination is added in reactor, siritch crude oil is heated with stirring to 50 DEG C, when siritch crude oil contains non-hydratable phospholipid, add 1 ‰ that phosphoric acid amount is oil mass, stirring 20 minutes, and the citric acid solution that mass concentration is 40% is added simultaneously, and stirred 10 minutes with 1000 revs/min of speed, it is well mixed, degumming reaction is then carried out, when the cohesion of colloid particle is in being clearly separated, is stirred 20 minutes, precipitation 5 hours, is removed completely to colloid；(3), depickling：Siritch crude oil after degumming is mixed 85% phosphoric acid according to the 0.12% of oily siritch crude oil gross weight by mixing arrangement, enter retort after mixing, it is 40 DEG C to keep environment temperature, and alkali lye is added dropwise in degummed oil, stirs 10min, then filter, the hot water that temperature is 80 DEG C is added into the liquid filtered out, the addition of water is the 5% of the liquid filtered out, stands 5h, refilter, depickling oil is made；(4), decolourize；By the depickling oil in step (3) under conditions of stirring, decolorising agent is added into depickling oil, is then poured into decolouring cucurbit, produces bleached oil；(5), it is deodorized：Bleached oil obtained by step (4) is fitted into deodorizing tank, and placed in deodorizing tank in heating magnetic stirring apparatus, then add immobilized phospholipase and stirred 3 hours with 50 revs/min of speed, again with 8000 revs/min of centrifugation 3 minutes, deodorization time is 25min, steam deodorization is carried out under vacuum, and deodorization pressure is 60Pa, and deodorization temperature is 230 DEG C；(6), the oil after deodorization is cooled down, untill qualified.
Aqueous slkali in step (3) is the NaOH solution that mass concentration is 2%, the pH value for making depickling oil is 6.0, degumming temperature in step (2) is 50 DEG C, usually time is 1.5h, the addition of decolorising agent in step (4) is the 2% of oily weight, decolouring pressure in step (4) is 0.09MPa, and the 20min that decolourizes.
Embodiment 2：
A kind of siritch raw oil refining technique of the present invention, comprises the following steps：(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；(2), degumming；Siritch crude oil after impurity elimination is added in reactor, siritch crude oil is heated with stirring to 60 DEG C, when siritch crude oil contains non-hydratable phospholipid, add 2 ‰ that phosphoric acid amount is oil mass, stirring 30 minutes, and the citric acid solution that mass concentration is 46% is added simultaneously, and stirred 20 minutes with 1200 revs/min of speed, it is well mixed, degumming reaction is then carried out, when the cohesion of colloid particle is in being clearly separated, is stirred 25 minutes, precipitation 6 hours, is removed completely to colloid；(3), depickling：Siritch crude oil after degumming is mixed 85% phosphoric acid according to the 0.13% of oily siritch crude oil gross weight by mixing arrangement, enter retort after mixing, it is 60 DEG C to keep environment temperature, and alkali lye is added dropwise in degummed oil, stirs 12min, then filter, the hot water that temperature is 90 DEG C is added into the liquid filtered out, the addition of water is the 8% of the liquid filtered out, stands 5h, refilter, depickling oil is made；(4), decolourize；By the depickling oil in step (3) under conditions of stirring, decolorising agent is added into depickling oil, is then poured into decolouring cucurbit, produces bleached oil；(5), it is deodorized：Bleached oil obtained by step (4) is fitted into deodorizing tank, and placed in deodorizing tank in heating magnetic stirring apparatus, then add immobilized phospholipase and stirred 5 hours with 70 revs/min of speed, again with 9000 revs/min of centrifugation 4 minutes, deodorization time is 28min, steam deodorization is carried out under vacuum, and deodorization pressure is 100Pa, and deodorization temperature is 235 DEG C；(6), the oil after deodorization is cooled down, untill qualified.
Aqueous slkali in step (3) is the NaOH solution that mass concentration is 3%, the pH value for making depickling oil is 6.5, degumming temperature in step (2) is 55 DEG C, usually time is 1.7h, the addition of decolorising agent in step (4) is the 3% of oily weight, decolouring pressure in step (4) is 0.1MPa, and the 25min that decolourizes.
Embodiment 3：
A kind of siritch raw oil refining technique of the present invention, comprises the following steps：(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；(2), degumming；Siritch crude oil after impurity elimination is added in reactor, siritch crude oil is heated with stirring to 70 DEG C, when siritch crude oil contains non-hydratable phospholipid, add 3 ‰ that phosphoric acid amount is oil mass, stirring 40 minutes, and the citric acid solution that mass concentration is 50% is added simultaneously, and stirred -30 minutes with 1500 revs/min of speed, it is well mixed, degumming reaction is then carried out, when the cohesion of colloid particle is in being clearly separated, is stirred 30 minutes, precipitation 7 hours, is removed completely to colloid；(3), depickling：Siritch crude oil after degumming is mixed 85% phosphoric acid according to the 0.15% of oily siritch crude oil gross weight by mixing arrangement, enter retort after mixing, it is 80 DEG C to keep environment temperature, and alkali lye is added dropwise in degummed oil, stirs 15min, then filter, the hot water that temperature is 100 DEG C is added into the liquid filtered out, the addition of water is the 10% of the liquid filtered out, stands 5h, refilter, depickling oil is made；(4), decolourize；By the depickling oil in step (3) under conditions of stirring, decolorising agent is added into depickling oil, is then poured into decolouring cucurbit, produces bleached oil；(5), it is deodorized：Bleached oil obtained by step (4) is fitted into deodorizing tank, and placed in deodorizing tank in heating magnetic stirring apparatus, then add immobilized phospholipase and stirred 8 hours with 120 revs/min of speed, again with 10000 revs/min of centrifugation 5 minutes, deodorization time is 30min, steam deodorization is carried out under vacuum, and deodorization pressure is 200Pa, and deodorization temperature is 240 DEG C；(6), the oil after deodorization is cooled down, untill qualified.
Aqueous slkali in step (3) is the NaOH solution that mass concentration is 4%, the pH value for making depickling oil is 7.5, degumming temperature in step (2) is 60 DEG C, usually time is 2h, the addition of decolorising agent in step (4) is the 4% of oily weight, decolouring pressure in step (4) is 0.09-0.1MPa, and the 30min that decolourizes.
Finally it should be noted that：It the foregoing is only the preferred embodiments of the present invention, it is not intended to limit the invention, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (5)
1. a kind of siritch raw oil refining technique, it is characterised in that comprise the following steps：
(1), pre-process；Siritch crude oil is filtered, the removal of impurity is gone and passes through ultraviolet sterilization；
(2), degumming；Siritch crude oil after impurity elimination is added in reactor, by siritch crude oil agitating and heating
To 50 DEG C -70 DEG C, when siritch crude oil contains non-hydratable phospholipid, the 1-3 ‰ that phosphoric acid amount is oil mass is added,
20-40 minutes are stirred, and add the citric acid solution that mass concentration is 40-50% simultaneously, and with 1000-1500
Rev/min speed stirring 10-30 minutes, be well mixed, then carry out degumming reaction, when colloid particle coagulates
It is poly- to stir 20-30 minutes in when being clearly separated, 5-7 hours are precipitated, are removed completely to colloid；
(3), depickling：By the siritch crude oil after degumming by mixing arrangement by 85% phosphoric acid according to it is oily recklessly
The 0.12-0.15% of sesame oil crude oil gross weight is mixed, and retort is entered after mixing, and holding environment temperature is
40-80 DEG C, alkali lye is added dropwise in degummed oil, stirs 10-15min, then filter, toward the liquid filtered out
Middle to add the hot water that temperature is 80-100 DEG C, the addition of water is the 5-10% of the liquid filtered out, stands 5h,
Refilter, depickling oil is made；
(4), decolourize；By the depickling oil in step (3) under conditions of stirring, add and decolourize into depickling oil
Agent, it is then poured into decolouring cucurbit, produces bleached oil；
(5), it is deodorized：Bleached oil obtained by step (4) is fitted into deodorizing tank, and heating is placed in deodorizing tank
In magnetic stirring apparatus, immobilized phospholipase and small with 50-120 revs/min of speed stirring 3-8 is then added
When, then with 8000-10000 revs/min of centrifugation 3-5 minutes, deodorization time 25-30min,
Steam deodorization is carried out under vacuum condition, deodorization pressure is 60-200Pa, and deodorization temperature is 230-240 DEG C；
(6), the oil after deodorization is cooled down, untill qualified.
A kind of 2. siritch raw oil refining technique as claimed in claim 1, it is characterised in that step (3)
In aqueous slkali be NaOH solution that mass concentration is 2-4%, the pH value for making depickling oil is 6.0-7.5.
A kind of 3. siritch raw oil refining technique as claimed in claim 1, it is characterised in that step (2)
In degumming temperature be 50-60 DEG C, usually time 1.5-2h.
A kind of 4. siritch raw oil refining technique as claimed in claim 1, it is characterised in that step (4)
In decolorising agent addition for oil weight 2-4%.
A kind of 5. siritch raw oil refining technique as claimed in claim 1, it is characterised in that step (4)
In decolouring pressure be 0.09-0.1MPa, and the 20-30min that decolourizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498082.6A CN107557149A (en) | 2016-06-30 | 2016-06-30 | A kind of siritch raw oil refining technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498082.6A CN107557149A (en) | 2016-06-30 | 2016-06-30 | A kind of siritch raw oil refining technique |
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| Publication Number | Publication Date |
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| CN107557149A true CN107557149A (en) | 2018-01-09 |
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ID=60969031
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610498082.6A Pending CN107557149A (en) | 2016-06-30 | 2016-06-30 | A kind of siritch raw oil refining technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548855A (en) * | 2020-05-08 | 2020-08-18 | 上海允文食品有限公司 | Five-threshing process of linseed crude oil |
| CN112126516A (en) * | 2020-09-24 | 2020-12-25 | 泰安天兴木业科技有限公司 | Biomass refining technology for producing pollution-free and zero-emission biomass |
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| CN101092587A (en) * | 2007-07-24 | 2007-12-26 | 东北农业大学 | Refining crude oil of soybean by immobilized phospholipase |
| CN102226127A (en) * | 2011-05-10 | 2011-10-26 | 常州现代农业科技发展有限公司 | Raw oil refining technique |
| US20110275843A1 (en) * | 2009-01-08 | 2011-11-10 | Sime Darby Research Sdn. Bhd. | Refining of edible oil |
| CN105132156A (en) * | 2015-08-28 | 2015-12-09 | 成都市新津迎先粮油有限公司 | Method for refining rape-seed raw oil |
| CN105132157A (en) * | 2015-08-28 | 2015-12-09 | 成都市新津迎先粮油有限公司 | Refining process for rapeseed oil |
| CN105505576A (en) * | 2016-01-20 | 2016-04-20 | 和县绿源油脂有限公司 | Raw oil refinement technique of healthy blend oil |
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2016
- 2016-06-30 CN CN201610498082.6A patent/CN107557149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101092587A (en) * | 2007-07-24 | 2007-12-26 | 东北农业大学 | Refining crude oil of soybean by immobilized phospholipase |
| US20110275843A1 (en) * | 2009-01-08 | 2011-11-10 | Sime Darby Research Sdn. Bhd. | Refining of edible oil |
| CN102226127A (en) * | 2011-05-10 | 2011-10-26 | 常州现代农业科技发展有限公司 | Raw oil refining technique |
| CN105132156A (en) * | 2015-08-28 | 2015-12-09 | 成都市新津迎先粮油有限公司 | Method for refining rape-seed raw oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111548855A (en) * | 2020-05-08 | 2020-08-18 | 上海允文食品有限公司 | Five-threshing process of linseed crude oil |
| CN112126516A (en) * | 2020-09-24 | 2020-12-25 | 泰安天兴木业科技有限公司 | Biomass refining technology for producing pollution-free and zero-emission biomass |
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Address after: 751100 Jin Ji industrial park, Wuzhong City, the Ningxia Hui Autonomous Region Applicant after: NINGXIA JUNXINGFANG FOOD TECHNOLOGY Co.,Ltd. Address before: 751100 Qingzhen Muslim Food Industrial Park, Jinji Industrial Park, Wuzhong City, the Ningxia Hui Autonomous Region Applicant before: WUZHONG XINGDA GRAIN AND OIL Co.,Ltd. |
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Application publication date: 20180109 |
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